Updated to work with live site

Added components from somewhere
fixed some css background image

static/css/global.css

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+body {
+  font-family: 'Open Sans', sans-serif;
+  font-display: swap;
+  font-size: 1rem;
+  line-height: 1.8;
+}
+
+.overlay {
+  display: flex;
+  background-size: cover;
+  background-position: center;
+  min-height: 200px;
+  text-align: center;
+  align-items: center;
+  justify-content: center;
+}
+
+.title {
+  display: inline-block;
+  font-size: 3rem;
+  text-decoration: none;
+}
+
+nav {
+  align-items: center;
+  display: flex;
+  flex-direction: row;
+  justify-content: space-between;
+}
+
+/* flexbox navbar test*/
+nav ul {
+  display: flex;
+  padding: 0;
+  margin: 0;
+}
+
+nav ul li {
+  font-size: 1rem;
+  text-align: center;
+  padding: 5px;
+}
+
+nav li {
+  list-style-type: none;
+}
+
+/* Change color on hover */
+nav li a {
+  margin-left: 20px;
+  margin-right: 20px;
+  text-decoration: none;
+}
+
+main {
+  margin-top: 30px;
+}
+
+/* Content types */
+section {
+  border-radius: 5px;
+  padding: 5px 20px;
+}
+
+/*Simple css to style it like a toggle switch*/
+.theme-switch-wrapper {
+  display: flex;
+  align-items: center;
+}
+
+.theme-switch {
+  display: inline-block;
+  height: 24px;
+  position: relative;
+  width: 40px;
+}
+
+.theme-switch input {
+  display: none;
+}
+
+.slider {
+  background-color: #ccc;
+  bottom: 0;
+  cursor: pointer;
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+  transition: .2s;
+}
+
+.slider:before {
+  background-color: #fff;
+  bottom: 4px;
+  content: "";
+  height: 16px;
+  left: 4px;
+  position: absolute;
+  transition: .2s;
+  width: 16px;
+}
+
+input:checked + .slider {
+  background-color: #66bb6a;
+}
+
+input:checked + .slider:before {
+  transform: translateX(16px);
+}
+
+.slider.round {
+  border-radius: 34px;
+}
+
+.slider.round:before {
+  border-radius: 50%;
+}
+
+/* Responsive layout - when the screen is less than 700px wide, make the two columns stack on top of each other instead of next to each other */
+@media screen and (max-width: 700px) {
+  .title {
+    display: block;
+    text-align: center;
+  }
+
+  nav {
+    flex-direction: column;
+  }
+
+  nav ul {
+    flex-direction: column;
+    margin: 0 auto;
+  }
+
+  nav ul li a {
+    text-align: center;
+    margin: 0 auto;
+  }
+}

static/css/themes.css

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+/* Default theme */
+:root {
+    --background-color: #222222;
+    --headings-color: #ffffff;
+    --font-color: #ffffff;
+}
+
+/* Dark theme */
+html[data-theme='dark'] {
+    --background-color: #222222;
+    --headings-color: #ffffff;
+    --font-color: #ffffff;
+}
+
+body {
+    background-color: var(--background-color);
+    color: var(--font-color);
+}
+
+h1, h2, h3, h4, h5 {
+    color: var(--headings-color);
+}
+
+hr {
+    background-color: #eeeeee;
+}
+
+.overlay {
+    border-bottom: 2px solid #eeeeee;
+}
+
+li a:hover {
+    border-bottom: 3px solid white;
+    text-decoration: none;
+}
+
+a {
+    color: #CC99FF;
+}
+
+a:hover {
+    color: white;
+}

static/img/user.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="white"
+     stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-user">
+    <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"></path>
+    <circle cx="12" cy="7" r="4"></circle>
+</svg>